What is made out of protein and aid chemical reaction in organisms?

Emily wanted to see what battery lasted the longest. She put each battery into a clock and recorded the time that the clock stopped. She used Duracell, Energizer, Kroger bran, and EverReady. What is the control variable and the contstants?

Which is a safe practice for handling chemicals in a lab investigation? a) Dispose of all chemicals down the sink with a lot of water. b) Tell the teacher about any chemicals that were spilled in a lab.

Which term names the substances necessary for the development of hormones in the human body? lipids starches amino acids Vitamins first person gets brainliest

Which one of the following plays the most significant role in regulating the distribution of blood into tissues? a. venulesb. arteriesc. capillariesd. veinse. arterioles

The most common cause of chronic pelvic pain for women in the prime of their reproductive years is:

Which DNA bases pair with each other? How many hydrogen bonds are shared by each pair?

Which layers of sedimentary rock at Grand Staircase Escalante National Monument do you think are the oldest?

Animals in the higher trophic levels generally share two characteristics. They are typically

Name two ways that carbon enters the atmosphere

Omid is spending the semester in England where the road signs are in km. If he drives from his school into a town 6mi away, how many km will he drive?